KB6NU's No Nonsense series of amateur radio license study guides has become famous for helping people pass the tests. Written in a simple, easy to understand style, this study guide will help you upgrade to Extra in no time. Here's what others have had to say:

"I passed the Extra! Thank you so much. It really got me through some of the tougher chapters." --Laura, KD2APU

"After being a Tech for 19 years, I decided it was time to upgrade. I bought the Kindle version of your Extra Class study guide and was amazed that it said in a couple of pages what the ARRL guide says in a couple of chapters. Thanks!" --Brian, N1ZZD